Convertible ejector



(ModeL) 2 Sheets-Sheet 1.

P. W. KRBMER.

CONVERTIBLE EJBGTOR, INSPIRATOR, AND INJECTOR. No. 282,092. PatentedJuly 31,1883.

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(Model.) 2 Sheets -Sheet 2.

P. W. KREMER.

CONVERTIBLE EJECTOE, INSPIRATOR, AND INJECTOR, No. 282,092. PatentedJuly 31, 1883.

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UNITED STATES PATENT Fries.

FRANKLIN W. KREMER, OF WADSVORTH, OHIO.

CONVERTIBLE EJECTOR, INSPIRATOR, AND INJECTOR.

SPECIFICATION forming part of Letters Patent No. 282,092, dated July 31,1883.

Application filcd Janiury i, 1883. (Modem To all whom it may concern:

Be it known that I, FRANKLIN W. KREMER,

a citizen of the United States, residing at Wadsworth, in the county ofMedina and State of Ohio, have invented a certain new and usefulConvertible Ejector, Inspirator, and Injector, of which the following isa full, clear, and exact description.

The objects of my invention are to simplify, strengthen, and increasethe durability of the construction of water-feeding devices forsteamboilers, and to adapt such devices for interconversion intoinspirators or lifting -injectors, ejectors, and non-lifting injectors,by change or substitution or addition of parts.

To these ends my invention consists in fitting the parts together byground or ground and packed joints,- the several parts being heldtogether as a whole by connecting-bolts and nuts, whereby parts areeasily removed and renewed, danger of sticking and corrosion incident tothe usual screw-threaded joints avoided, and the construction largelysimplified and strengthened and greater durability secured.

The invention also consists in providing parts for such an inspiratorwhereby it may be converted into an ejector or injector at pleasure, inaccordance with the work to be done by it. 7 r

The invention further consists in providing an ejectoror inspirator witha check-valve,

' whereby the dangers and difficulties incident to the backfiowof steamand the breaking of the steam-jet, respectively, are obviated; and theinvention finally consists in the details of construction, all ashereinafter specifically set forth and claimed. 7 7

I11 the accompanying drawings, illustrating my invention, in the severalfigures of which like parts are similarly designated, Figure 1 is aperspective view of my inspirator. Fig. 2 is a central verticalcrosssection of the same when converted into an ejector. Fig. 3 is asimilar view of the inspirator of Fig. 1. Fig. 4 is a central verticalcross-section of a nonlifting injector. Fig. 5 is a top plan view of theforcing-tube section, and Fig. 6 is a bottom plan view thereof, with thecheck-valve pertaining thereto shown in dotted lines.

The suction or inlet section a and the dis charge or boiler section Z)of my device are provided with lateral horizontal ears 0 c and (Z (Z,respectively, which ears are perforated. These sections receive betweenthemselves the various sections going to make up the device, and thewhole number of sections are securely united by bolts 6 0, passedthrough the perforated ears 0 c (M, and fastened therein by nuts Insteadof jointing the several sections by screw-threads, as heretofore, Ireain' out or counterbore the edges of alternate sections, so asto'receive within them the adjacent sections, 'making the fitting orjoint tight and accurate, and insuring them against leakage by packingwhere necessary.

Experience has demonstrated that the old screw-thread joint is whollyunreliable, for in removing a section its threads will be iiijured tosuch an extent as to prevent further accurate fitting, and this isparticularly true where sediment or corrosion incident to some kinds ofwater has accumulated. Lime-water is especially injurious, as the limeis precipitated by the steam and hardens into an almost unremovablescale throughout the joints. Now, my unthreaded joints andbolt-connected sections obviate any danger from this source.

In illustration of my mode of joining the sections'of an ejector,referring to Fig. 2, the section a has its end a counterbored andground, so as to leave an external flange. The section 9 has a straightend, 71, of a diameter to fit thecounterbore in section a within theflange, while the end i of said section 9 is counterbored, as in thecase of the end a of section a. \Vithin this counterbored end i isreceived the upper edge of the section j, the lower end of such secti onj being received within the counterbored end I) of the section b.

If desired, any suitable packing-in the 11ature, for example, of arubber compound or soft-nictal-gasket or annulus-may be laid in thecounterbores to insure a steam-tight j oint; but ordinarily the fittingtogether of the sections accurately will obviate any necessity for theemployment of packing. The sections so put together are united securelyand tightly under a regulated compression by the c0nnecting-bolts c cand nuts ff engaging the ears 0 c (l (1, before stated; and the deviceelevated to a certain height and the steam falls below thc requiredpressure the jet is broken and the machine ceases or fails to work, thesteam being thereby forced back through the suction or inlet pipe to thewell or reservoir. If this mishap is not discovered in time, and of itsnature it rarely is, the steam heats the water to such a degree that themachine will not start when the pressure is increased; and where liquidsare conveyed with. an ejector this diffieulty is very objectionable, ifnot serious. I provide for and overcome this trouble by applying a disk,k, in. the waterchamber, acting as a check-valve just above theforcing-tube. In Fig. 2 the forcing-tube Z has its steam-inlet m in thesection 9, and a perforated diaphragm, o1, separates the waterinlet fromthe forcing-tube. The disk is perforated centrally to slip over theforcingtube, and pla s between the mixing or directing section or tube7' and said diaphragm it. Now, so soon as the jet is broken, the disk isforced to its seat against the diaphragm, as shown in the drawings, bythe back-pressure, thus closing the wateray through the openings in saiddiaphragm and preventing the steam from blowing back.

In 3 the device is arranged as an inspirator or lifting-injector, withthe forcingsection and its diaphragm and check-valve substantially as inFig. 2, but for another purpose, to wit: In starting a liftinginjectorthe steam is turned on the liftingj et, and when the water appears atthe overflow the lift-overfi ow is closed and the water will issue fromthe overflow below the combining-tube. At this stage the steam is turned011 the forcing-j et. I11 other machines, if the steam is admitted toorapidly, the jet will be broken and the steam must be shut off and thewhole operation gone over again, whereas in my machine the trouble isavoided by the check-valve, for if the steam be turned on too rapidlythis check-valve will rise against the diaphragm, closing. the waterwayand preventing the breaking of the lifting-j et. It thus makes theforcing-j et positive in its action, which is very desirable, especiallyin locomotive-cngine-boiler injectors.

Th several sections making up this inspirator are jointed and connectedas described of Fi 2 and said joints need not be further specified. j isthe forcing or discharging jet' tube or section, and 0 is thelifting-jet tube or section. dispensed with.

In Fig. 4 the section a is provided wi 11 the steam -j et tube .1 andthe water-inlet 7 The The overflow in the section b may be section j anda similar but reversed section, q, with their conical tubes adjacent,form a steam and water combining tube for a nonlifting injector. Thesesections are held separated and in position by a section, 0', the section a, and the usual discharge-section, b. The section a receives thewater through the pipe 1), and this pipe is connected by a T with apipe, 8, leading by pipe t to the plane between the combining-tubes. Thepipe 8 is connected with the T by a slipjoint, a, suitably ar-'rangedas, for example, a packing-gland.

Now, this device is specially designed for use where the water to be fedto the boiler ishigher than or on a level with the machine 5 and,although the figure (4) illustrating it is on a different scale from theother figures of the drawin s, I wish it to be understood that this injectorembodies all the elements of the others, in so far as they areapplicable.

In machines heretofore used, so far as I am aware, where thewater-supplyis higher than on a level with the boiler, theinj ectorfailed to work, owing to the varying steam-pressure, unless the overflowwere left open. IVhen the steam is low waterwill escape at the overflow,and when it is high air will be drawn in, each very undesirable. Someinjectors have a valve arranged to allow the escape of the water andprevent air being rawn in. In my non-lifting injector, Fig. 4, .hen thesteam is high, water will be drawn in through the pipe it instead ofair, and the capacity of the machine thus greatly augmented. YVith lowpressure of steam, instead of wasting, the water is returned to thefeed-pipe. Thus, it will be seen, my machine becomes practicallyautomatic and the working perfect with varying steam-pressure.

The slip-joint for connecting pipes 19 and s is provided in order topermit the ready separation of the parts and prevent cramping the jointsof the pipes when the parts are drawn up by the clamping-bolts.

XVhile I have not shown any one, device containing all the partsnecessaryto make up each or either of the others, I have yet shown suchdevice easily separable for the removal. and

substitution of parts to change the character or operation of themachine, and have shown one or more such parts applicable in two or moredifferent kinds of machines.

Vhat I claim is- 1. The sections or parts of an ejector or equivalentfeeder fitted together with ground or ground and packed joints, andbolts engag-' ing perforated ears 011 the uppermost and lowermostsections or parts for clamping together as a whole all such sections orparts, substantially as and for the several purposes specified.

2. The combination, with the steam inlet 01' forcing tube and thewater-way, of an annulus,

7c, and a perforated diaphragm, n, adapted to operate as a check-valveto prevent the back flow of steam, substantially as shown and dcscribed.

3. In an injector, the combination of the lifting jet, the forcing-tube, counterbored ground joint therefor, and clamping-bolts, the saidlifting-jet being arranged directly over the forcing-tube and clamped bysaid bolts in direct line with the same, substantially as and for thepurpose described.

4. In a non-lifting inj ector, the sections thereof fitted together withground or ground and packed joints, and clamp -bolts, combined withpipes 19, s, and t, having a slip-joint, u, and constituting anautomatic regulating device, substantially as shown and described.

5. In an ejector, a forcing-section provided with a perforated diaphragmand .a checkvalve seated thereon by backflow, removable at pleasure, andcombinable with other suit-

